Synchronizer.



F, HEAH.

SYNCHRONIZER. f

APPLICATION FILED IuIIE I5. I9I5.

Patented Jan. 21, 1919.

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ll Ik. I II HHHII'I! sYNcHRoNlzE'R. APPLICATION FILED IUNEJ, I9I5 1,292,315. I Patented 1311.211919.

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IIIIII 1I 1 l I! i I II IMI I I IIII, II [I IIIIII III II @aw W FRANK HEATH, or 'NATIONAL Grrr, cALlromrrA BYNCHBON'IZER.

Avpplcation 'filed June 15, 1915. Serie! No. 34,269.

Tg all whom t may concern:

Be it known that I, FnANE HEATH, a citizen of the'United States, residing at National City, in the' county of San Diego and State oi California, have invented certain new and useful Impmvementsin Synchronizers, of which the Afollowing is a specification.

'My invention relates te ,synchroniaers to he -usedfor' keeping two or more motors manning at the' saanespeed or the same relative speedes predetermined, either-when sensitive, thus providing uniform speedoi the dierent ymeters:

ith these andother objects in View, as will appear hereinafter, my invention consiste of certain neral vfeatures' of construetionj, combination, and arrangement of parte as willbe hereinafter desribedin detail and particularly set rth'f-in l"the appended claims, reference being had to the "accompanyingdrawings'and te the characters of reference thereon;whichi form. a part of this specification, in which-z' i shows three electrical motors elehtniealiy connected together, one of which isfthe controlfm'otor andthe other two in connection v-therewil'h" are power? motors;

" Eig. @5y-is adetailedasecticnal view ofthe mechanical connecting fnieaiis for regulatVb ing the power motors; Fig. 3 is afplan v 'fiew et thref motors 'elctricaiiy' connected 'together,-'shown in lslli'ghtly modified' -form from vthat; in i1; Figi-4.- is a'detaigled secf 'tional "view-showin the ratchet wheel and pawl connection for the regulating motors, and Ifg. 5 irsa 'side-elevational' View@ thereof. f' @he control: metorsf'l', power motors 2 'and .switches-11, resistance'coils 12, plungers 13', magnets 14 an'd ratehets f, constitute' the principal parts ofmy synchronizer. 's -f "in: Fig. 1l, If haluqashw. three motors Specification of Letters Patent.

, in its revolutions:

Patented Jan. 21, 1919.

electrically connected together; the controlling one being represented by numeral 1. Motors 2 and 3 are the power motors and run at the same speed as the control motor.

The control motor 1 shown in Fig. l is provided with three switch connections la. lb and l, with which it engages consecutively These switches are electrically connected to the magnets 6a, 6b and 6c, which in turn operate the plungers 7 which are pivotally mounted on the shaft 4: at one of their ends andere provided with joints 7a so as to allow a portion thereof to reciprocate in the bearings 7b and each is provided with a spring 7c to facilitate the movement of the plunger backward when released by the magnets 6. On the one end of this shaft 4 is secured the long faced pinion 8 which engages with the gear 9, which is provided with an extended hub 9'd on the end et which is an annular flange 9b which is provided with a double beveled sur- .tace adapted to engage with the switches ll.

'This huh 9a is internally threaded at one of its ende, adapted to it an external thread on the shaft i0, so that it the motor 2 is running the same speed as the motor l, this hub 9a will maintain its'same relative position on the shaft l0; but if the motor 2 should be running slightly slower, the hub 9EL will more toward the motor 2 on the shaft 10, closing the switches to the wires running tol the resistance coil 12, thus forming a rheostat for controlling the current to the motor 2, the resistance being lessened by the moving ot the hub 9a toward the motor 2, by reason of vthe current 'short circuiting through wherever closed, will cause the motor 2 to pick up; thus the speed will be Yequalized at all times.y Qn the shaft 10 is secured asleeve 10e' adapted to be removed in f placing and removing the 'gear 9 on'the shaft v i0-and` mounted on said sha-ft 10, at each end e'f-the threaded portion, isfa spring 10b for the purpose of starting the gear'piece' on. the threaded portion if it: should turn clear 'oiir at; either end. The ratchet wheel 53,

as' shown best in Figs. 4 and 5,'is secured to the support 5b and is for the urpose of preventing the shaft from turning' inl the wrong direction when starting and -it will be notedf-that'the ratchet pawls 5c are pivotall mounted on the wheel so -that whenv sai wheel 'reaches' a eertain'velocity' they are thrown out of engagement with'the ratchet wheel' by' centrifugalV force.y

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n win be noted that the two different sets of magnets constituting the motors for regulating the two power motors are electrically connected in-series and controlled by the control motor 1. If it is desired to synchronize a large number of motors a large number of sets of magnets constituting regulating motors are used and electrically connected anywhere between the two sets of magnets on the wires connecting these two sets of magnets and the secondary motors will all be synchronized.

The control motor is in series with one of the power motors in Fig-1, but not in Fig. 3, for the reason that it might be preferable in some cases, especially where the power motor and the control motors and located at a eat distance apart to provide a Alocal circuit for each unit consisting of a regulating and power motor and also for the control motor and to use more sources of electrical energy and only one main line wire.

In the modied form shown in Fig. 3 the construction is slightly different to provide for synchronizing at along distance, in which case only one connecting wire is used and the wires are grounded and an extra magnet 14 is used which connects with a ratchet wheel 15 by means of plunger 13 which is constructed and operates similar to the plunger 7, heretofore described and this ratchet wheel is provided with an extended arm 13a forming a switch contact adapted to contact with the switches 13" in its revolution, each pulsation of the magnet moving the ratchet wheel one notch and the magnets are electrically connected to this ratchet wheel and its engaging switches instead of the primary motor.

The operation of my synchronizer is as follows: The motor 1 in running engages the switches l, lb and 1 ,which in turn operate the magnets 6, 6b and 6c causing the reciprocation of the plunger 7 revolving the sha-ft 4, andthe magnets, plungers and shafts in connection with both motors 2 and 3 being electrically connected together op-.

erate at the same speed so that the pinion 8 in connection with each of these motors revolve at the same speed. The gears 9 engaging said pinions 8 move backwardly and forwardly on the shaft 10 depending on the relative speed of the gear 9 and the motor 2, and in its movement back and forth the ange 9'engages the-switches 11 motors 2 and 3 in accordance with the rela-v controlling 'the quantity of current to the tive speed of the motor with the gear 9, the

current being increased when the ange v1b Amoves in one d1rect1on and decreasedwhen vit moves inthe opposite `direction so that the motors 2 or 3 or an number connectedin vthe same way as t e motors 2 and 3 will run at the samespeed atall operating a rheostat for controlling the.

speed of motors and to synchronize them,

`I do not wish to be limited to this particular construction, combination and arrangement, but desire to include in the purview of my invention, the construction, combination and arrangement .substantially as set forth in the appended claims It is obvious thatwith this construction there is provided a Synchronizer which is very sensitive and thereby will keep two or more motors, whether near or widely separated, running at practically the same speed or the same relative speed; thatthe device is simple, easily constructed and easily operated; that-the modification shown in Fig. 3 simply shows a slight addition in cases where the motors arewidely separated.

Having thus describedmy invention what I claim as new and desire to secure byLetters- Patent, is:

1. In synchronizers the combination of a control motor', a regulating motor, comprising a plurality of Aelectro-magnets charged consecutively by means of said control motor,-plunge`rs reciprocated by said magnets and a shaft driven by said plungers, a ower motor, a screw secured to the shaft o said vpower motor, a nutin connection with said regulating motor adapted to Iscrew on said' screw, means in'connection with said power motor for regulatmg said power motor and means on said nut adapted 'to engage with a motor and power motor run a certain rela- 'tive speed to each other, comprlsmg a screw secured to said power motor, a nut controlled by the. regulating motor adapted to run on lsaid screw and a rheostat controlled by said nut for controlling the current to said power-motor, whereby said motors are made to -run at thesame relative speed to each other. 1

3. In synchronizers, the combination of a control' motor, a regulating motor comprising a plurality of electro-magnets charged consecutively, plungers reciprocated by said magnets. and a shaft driven by said plungers, a power motor, a screw on said power motor, a gear provided with a hub adapted to screw thereon, a pinion mounted on said regulating motor adapted to engage with said gear, Vand a rheostat for controlling lalil power motor operated by said gear c 4. synchronizers, the .combination of a control motor,'a plurality of switches adapt` ed to be opened and closed by said control motor, a regulating motor comprising a plurality lof magnets in series connection with said switches, a plurality of plungers adapted to be reciprocated by said magnets, a shaft connected to said plungers, a pinion secured to said shaft, a power motor carrying a shaft with a screw thereon, a gear carrying a nut adapted to screw on the 10 screw on said shaft and engage with said pinion and a rheostat voperated by the longitudinal movement of the gear on said screw for controlling said power motor.

In testimony whereof I have hereunto set 15 my hand at San Diego, California, this 9th day of June, 41915.

FRANK HEATH. 

